Merge branch 'hotfix/2.3.9'
Merge branch 'release/2.3.10'
Merge branch 'release/2.3.11'
Merge branch 'release/2.3.13'
gems upgrade, including Rails 4.1.0
Merge branch 'release/2.4.0'

* release/2.4.0:
  update to 2.4.0
  updated from bootstrap's modal window to Magnific Popup
  fixed comma/dot conversion in expenses
Merge branch 'release/2.4.1'

* release/2.4.1:
  hopefully fixed sprockets requirement
  added Gemfile.lock to repo
fixed Gemfile.lock
fixed sprockets with updated version
Merge branch 'hotfix/2.4.3' into develop

* hotfix/2.4.3:
  fixed sprockets with updated version
  fixed Gemfile.lock
  gems upgrade, including Rails 4.1.0